CERCOPI- GIBBONS ORANG GORILLA
THECIDAE A ACHIMPANZEE
SHREWS DEMURS TARS.US
ANCESTRAL PROS1MIAN PRIMATES R. C.
INSECTIVOROUS ANCESTRAL PLACENTALS
FIG, 57.—The evolution of the Primates. B, line leading to the Bats ; 0, line of the Oreodonts leading to some Mammalian Orders ; G, line leading to Galeopithecus ; Rf line leading to the Rodents. The Tree Shrews are placed close to the Lemurs although they are not yet included in the Primates.